<template>
  <div :id="id" style="width: 100%;height: 270px;"></div>
</template>

<script>
  let angle = 0;//角度，用来做简单的动画效果的
  let value = 55.33;
    export default {
      props: ['id'],
      watch: {
        title: {
          handler(newVal, oldVal) {
            if (newVal) {
              this.getEchartsData()
            }
          },
          deep: true
        }
      },
      methods:{
        // 折线图数据渲染
        getEchartsData() {
          let myChart = this.$echarts.init(document.getElementById(this.id))

          var option = {
          backgroundColor:"#061740",
          title: {
                  text: '{a|'+ value +'}{c|%}',
                  x: 'center',
                  y: 'center',
                  textStyle: {
                      rich:{
                          a: {
                              fontSize: 48,
                              color: '#29EEF3'
                          },

                          c: {
                              fontSize: 20,
                              color: '#ffffff',
                              // padding: [5,0]
                          }
                      }
                  }
                },
              legend: {
                  type: "plain",
                  orient: "vertical",
                  right: 0,
                  top: "10%",
                  align: "auto",
                  data: [{
                      name: '涨价后没吃过',
                      icon: "circle"
                  }, {
                      name: '天天吃',
                      icon: "circle"
                  }, {
                      name: '三五天吃一次',
                      icon: "circle"
                  }, {
                      name: '半个月吃一次',
                      icon: "circle"
                  }],
                  textStyle: {
                      color: "white",
                      fontSize: 16,
                      padding: [10, 1, 10, 0]
                  },
                  selectedMode:false
              },
              series: [ {
                      name: "ring5",
                      type: 'custom',
                      coordinateSystem: "none",
                      renderItem: function(params, api) {
                          return {
                              type: 'arc',
                              shape: {
                                  cx: api.getWidth() / 2,
                                  cy: api.getHeight() / 2,
                                  r: Math.min(api.getWidth(), api.getHeight()) / 2 * 0.6,
                                  startAngle: (0+angle) * Math.PI / 180,
                                  endAngle: (90+angle) * Math.PI / 180
                              },
                              style: {
                                  stroke: "#0CD3DB",
                                  fill: "transparent",
                                  lineWidth: 1.5
                              },
                              silent: true
                          };
                      },
                      data: [0]
                  }, {
                      name: "ring5",
                      type: 'custom',
                      coordinateSystem: "none",
                      renderItem: function(params, api) {
                          return {
                              type: 'arc',
                              shape: {
                                  cx: api.getWidth() / 2,
                                  cy: api.getHeight() / 2,
                                  r: Math.min(api.getWidth(), api.getHeight()) / 2 * 0.6,
                                  startAngle: (180+angle) * Math.PI / 180,
                                  endAngle: (270+angle) * Math.PI / 180
                              },
                              style: {
                                  stroke: "#0CD3DB",
                                  fill: "transparent",
                                  lineWidth: 1.5
                              },
                              silent: true
                          };
                      },
                      data: [0]
                  }, {
                      name: "ring5",
                      type: 'custom',
                      coordinateSystem: "none",
                      renderItem: function(params, api) {
                          return {
                              type: 'arc',
                              shape: {
                                  cx: api.getWidth() / 2,
                                  cy: api.getHeight() / 2,
                                  r: Math.min(api.getWidth(), api.getHeight()) / 2 * 0.65,
                                  startAngle: (270+-angle) * Math.PI / 180,
                                  endAngle: (40+-angle) * Math.PI / 180
                              },
                              style: {
                                  stroke: "#0CD3DB",
                                  fill: "transparent",
                                  lineWidth: 1.5
                              },
                              silent: true
                          };
                      },
                      data: [0]
                  }, {
                      name: "ring5",
                      type: 'custom',
                      coordinateSystem: "none",
                      renderItem: function(params, api) {
                          return {
                              type: 'arc',
                              shape: {
                                  cx: api.getWidth() / 2,
                                  cy: api.getHeight() / 2,
                                  r: Math.min(api.getWidth(), api.getHeight()) / 2 * 0.65,
                                  startAngle: (90+-angle) * Math.PI / 180,
                                  endAngle: (220+-angle) * Math.PI / 180
                              },
                              style: {
                                  stroke: "#0CD3DB",
                                  fill: "transparent",
                                  lineWidth: 1.5
                              },
                              silent: true
                          };
                      },
                      data: [0]
                  }, {
                      name: "ring5",
                      type: 'custom',
                      coordinateSystem: "none",
                      renderItem: function(params, api) {
                          let x0 = api.getWidth() / 2;
                          let y0 = api.getHeight() / 2;
                          let r = Math.min(api.getWidth(), api.getHeight()) / 2 * 0.65;
                          let point = this.getCirlPoint(x0, y0, r, (90+-angle))
                          return {
                              type: 'circle',
                              shape: {
                                  cx: point.x,
                                  cy: point.y,
                                  r: 4
                              },
                              style: {
                                  stroke: "#0CD3DB",//粉
                                  fill: "#0CD3DB"
                              },
                              silent: true
                          };
                      },
                      data: [0]
                  }, {
                      name: "ring5",  //绿点
                      type: 'custom',
                      coordinateSystem: "none",
                      renderItem: function(params, api) {
                          let x0 = api.getWidth() / 2;
                          let y0 = api.getHeight() / 2;
                          let r = Math.min(api.getWidth(), api.getHeight()) / 2 * 0.65;
                          let point = this.getCirlPoint(x0, y0, r, (270+-angle))
                          return {
                              type: 'circle',
                              shape: {
                                  cx: point.x,
                                  cy: point.y,
                                  r: 4
                              },
                              style: {
                                  stroke: "#0CD3DB",      //绿
                                  fill: "#0CD3DB"
                              },
                              silent: true
                          };
                      },
                      data: [0]
                  }, {
                      name: '吃猪肉频率',
                      type: 'pie',
                      radius: ['58%', '45%'],
                      silent: true,
                      clockwise: true,
                      startAngle: 90,
                      z: 0,
                      zlevel: 0,
                      label: {
                          normal: {
                              position: "center",

                          }
                      },
                      data: [{
                              value: value,
                              name: "",
                              itemStyle: {
                                  normal: {
                                      color: { // 完成的圆环的颜色
                                          colorStops: [{
                                              offset: 0,
                                              color: '#4FADFD' // 0% 处的颜色
                                          }, {
                                              offset: 1,
                                              color: '#28E8FA' // 100% 处的颜色
                                          }]
                                      },
                                  }
                              }
                          },
                          {
                              value: 100-value,
                              name: "",
                              label: {
                                  normal: {
                                      show: false
                                  }
                              },
                              itemStyle: {
                                  normal: {
                                      color: "#173164"
                                  }
                              }
                          }
                      ]
                  },

                  {
                      name: "",
                      type: "gauge",
                      radius: "58%",
                      center: ['50%', '50%'],
                      startAngle: 0,
                      endAngle: 359.9,
                      splitNumber: 8,
                      hoverAnimation: true,
                      axisTick: {
                          show: false
                      },
                      splitLine: {
                          length: 60,
                          lineStyle: {
                              width: 5,
                              color: "#061740"
                          }
                      },
                      axisLabel: {
                          show: false
                      },
                      pointer: {
                          show: false
                      },
                      axisLine: {
                          lineStyle: {
                              opacity: 0
                          }
                      },
                      detail: {
                          show: false
                      },
                      data: [{
                          value: 0,
                          name: ""
                      }]
                  },

              ]
          }
          //获取圆上面某点的坐标(x0,y0表示坐标，r半径，angle角度)
          angle = angle+3
          myChart.setOption(option, true)
        }
      },
      mounted() {
        function getCirlPoint(x0, y0, r, angle) {
            let x1 = x0 + r * Math.cos(angle * Math.PI / 180)
            let y1 = y0 + r * Math.sin(angle * Math.PI / 180)
            return {
                x: x1,
                y: y1
            }
        }

        // function draw(){
        //     let myChart = this.$echarts.init(document.getElementById(this.id))
        //     angle = angle+3
        //     myChart.setOption(option, true)
        //    //window.requestAnimationFrame(draw);
        // }

        setInterval(function() {
            //用setInterval做动画感觉有问题
            this.getEchartsData()
        }, 100);
        this.getEchartsData()
      }
    }
</script>

<style>
</style>
